http://code.google.com/appengine/articles/update_schema.html describes one technique for updating your schema.
On Jun 22, 12:13 pm, "Nick Johnson (Google)" <nick.john...@google.com> wrote: > Hi Savraj, > > If you change your property from db.IntegerProperty to db.FloatProperty, all > your existing entities will fail to validate, and throw exceptions when > loaded. If you want to make this change, you need to transition all your > existing entities before making the update. > > -Nick Johnson > > > > On Mon, Jun 22, 2009 at 5:04 PM, Savraj <sav...@gmail.com> wrote: > > > Hi App Engine-ers, > > > So I've got a ton of data stored in my db -- and I've got a particular > > field, let's call it 'value' set as 'db.IntegerProperty()' in my model > > definition. If I change this to 'db.FloatProperty()', what happens? > > > I would imagine that the existing values in the db remain Integers, > > while the new ones coming in are floats, and that should be fine for > > my purposes. But will it work? I suppose the only way to know is try, > > but I don't want to mangle my database, which has quite a bit of data > > in it. > > > What will happen in this case? > > > -s > > -- > Nick Johnson, App Engine Developer Programs Engineer > Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: > 368047 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appengine@googlegroups.com To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
